Damper control



Oct. 25, 1932. v WESSELS 1,884,987

DAMPER' CONTROL Fi led Nov. 17, 1950 2 Sheets-Sheet 1 Hemmzrlfiaseis ATTO R NEY Oct. 25, 1932. H. WESSELS 1,334,937

DAMPER CONTROL Filed Nov. 17, 1950 2 Sheets-Sheet 2 cw a.

ATTORNEY INVENTOR .16 and pointed out in the-appended claim.

Patented Got 2 5, 1932 asp rin wEssnLsQon LOUISVILLE,- KENTUCKY Application 'iile'd November 17, 1930. Serial No. 496,241.

This invention relates to :certain new' and useful improvements in damper controls of the thermostatically operable-type. 1

Another object of i the "invention consists '6 in the provision and arrangement of ad ust able means to regulate thea'mount to which I the damper is to be'opened' pursuantto the desired degree of temperature to be maintained.

Withthe above and otherobjects' in view,

1 In the drawings i Figure 1-is,a"side;elfevation of a form of furnace disclosing the relative arran ement of the several forms of the present invention upon the ash pit' and fluepipe dampers.

Figure 2 is a sectional view taken on linev 22 of Figure 1. j Figure 3 is a side elevation of a modified form of the invention partly broken away. Figure 4 is an end elevation of themodification.

Figure 5 is a perspective view of an adjustable element for the modification.

Figure 6 is a view similar to,'Figure 8 of another form of my invention.

Figure 7 is an end elevation of the Figure 6 modification partly broken away to illus trate the relative arrangement of the damper adjusting means.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates generally a form of furnace having a damper 11 swingably supported upon the ash pit door 12 and a check draft damper 13 correspondingly mounted upon the furnace flue pipe 14:. All of the above is of the usual and Well known construction and which forms no part of the present application for Letters Patent and is mentioned for purposes of illustration only in bringing forward the novel advantages of the present invention. The invention primarily resides in the provision and arrangement ofthermostatic ele- 59 ments 15 which may be arrangedin any one of the several positions" suggested forco;

action" with the fluctuations in temperature. I

The installation ofthe thermostat 15-:upon

theifiue pipe 14 necessitates" the employment of an arcuate-shaped attaching plate 21 riveted or otherwise secured upon the flue pipe in the manner suggested in Figu'reBQ An arm 22, carried by and upwardly; outwardly and obliquely inclined from the attaching plate, terminates-to provide a bifurcatedporj tion' 23 within which the component portions of the-thermostat are positioned. An arm member 24, carried by and outwardly proecting from theattachi-ng plate21 has piv 'otally mounted thereon a fulcrum lever-25 having a flexible connection 26 between one end thereof and the check draft damper 13; An adjustingscrew 27 carried by-the f.ul-' crum lever 25 and :within therema-ining end there'ofli "is adj-u-stably positioned at right angles thereon for coacting engagement with the .extended portiona' of the thermostat 15 whereby the position *ofathe. .clieck .draft damper may be regulated; 'From -the foregoing :it is obviously vapparent that the flexingofithe thermostat will open and close the: dampers. in accordance with the :fiuctuati'ons'in temperature: c. The modified form of myinvention-dis closed inFigu-resl and 3fto-v5;inclusivfe may be either arranged directly upon the furnace; as shown in'Figu-re 1,"or "installed as a res mote control. The modification consists-of a housing structure 28 having a thermostat 29 horizontally positionedtherein and disposing the *free end thereof across: the points of communication between the housing proper and a depending.extension'30 therefor. A

' fulcrum lever 31, pivotal'ly mountedfluponaa 31 for coactionwith the thermostat 29 and guide member 37 in a manner to be better understood in the following description of the invention. A shaft member 43, journaled within aligned openings 44 in the guide element 37 upon opposite sides of a cut-out portion 45 therein, carries a con nector 46 havinga crank arm 47 projecting therefrom and to which one end of a flexible connector 48 in thenature of a chain or the like is attached. A disk member 50 fixedly positioned upon an extended portion of the shaft 43 beyond the wall of the housing eX- tension, is calibrated and notched. The notches in the disk 50 correspond to the calibrations whereby the apparatus may be set to automatically maintain a predetermined temperature. As a matter of fact the notches in the disk 50'maycorrespond to-the outside temperature for opening the drafts of the furnace sufficiently to maintain an even heat of 70.

Inaccomplishing the foregoing, I provide a lever member 51 pivotally mounted, as. at 52, for rockingmotion upon one of the eX- tensions 38, and having a projection-58 upon one end designed for accommodation within any one of the aforementioned notches in the disk 50 while a retractile spring 54 establishing connection at its ends between the aforementioned extension 38; and the other end of the lever 51 yieldingly retains the aforementioned extremity 53 within'the prescribed notch.

In Figures 6 and 7 of thedrawings, I have illustrated another modification of the invention which, as shown, combines the major characteristics of the other forms of the invention in that adjustment is afforded to both the thermostat and fulcrum bar. The foregos ing characteristics of construction is facilitated through the employment of a housing 55 having a thermostat- 56 transversely positioned therein adjacent the closed end Wall thereof. The other end of the housing, after the manner of the housing extension 30 for the housing 28in the modified form of the invention disclosed in Figures 4 to 6 inclusive, has the lowermost end open to facilitate ingress of air. A supporting arm 57 positioned within the housing 55 and depending therein in spacedrel'ation to the wallsthereof has pivotally supported thereon a fulcrum lever or bar 58including a counter-balanced weight 59. An adjusting screw 60, carried upon one From the foregoing, it is understood that V flexing of the thermostat through the expands ing and contracting thereof, caused by fluctuations in temperature, will open and close the dampers in the manner set forth.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.

Having described the invention what is claimed is: a i

a A damper control comprising a support, a thermostat detachably mounted in the support, a connecting rod adjustablyattached to the thermostat and housed within the support a lever pivoted to the support and connected at one end with said rod, a weight adjustable upon thelever and located exteriorly of the support,'a guide member slidable in the support and connected with the connecting rod, a shaft j ournaled in the guide member, a chain arranged to wind upon said shaft and adapted to be connected with adamper, a disk fixed to the shaft and provided with peripheral notches, and a lever member pivoted upon the guide member and having-an end adapted to enter the notches.

In testimony whereof I afiix my signature.

- HERMAN WESSELS. 

